Method and apparatus of video recording and output system

Abstract

A video recording and output system applies compression method and apparatus to plurality of images. The majority pixels of video stream which have been compressed and saved into a storage device have no data loss compared to the original raw image data is compressed by a method so named as “lossless” compression algorithm. When outputting the compressed image, a decompression engine is to reconstruct the compressed image into the raw image firstly and output to a display device. Another mechanism of outputting the decompressed image of raw image is to re-compress it into another image format with a certain amount of pixels having data loss compared to original image.

1 . A digital video recording apparatus for manipulating at least one received raw image to be stored in a storage and to be output to a display device, comprising: 
 an image compression apparatus which reduces the image data of at least one raw image with majority of pixels having no difference comparing to the original pixels;    a storage device saves at least one compressed image before outputting to another device;    an image decompression apparatus which recovers the compression image into another image format; and    an output device connecting between an image decompression device and another device for display or connecting to another output apparatus.    
   
   
       2 . The apparatus of  claim 1 , wherein the raw image has a plurality of lines, each line has a plurality of blocks, and each block has a plurality of pixels; and the image compression codec device performs a data reduction on the raw image to generate an intermediate data that has less data amount than the raw image.  
   
   
       3 . The apparatus of  claim 1 , wherein the storage device is comprised of a magnetic device.  
   
   
       4 . The apparatus of  claim 1 , wherein the storage device is comprised of a semiconductor memory device.  
   
   
       5 . The apparatus of  claim 1 , wherein the output device is comprised of a display device with LCD display panel.  
   
   
       6 . The apparatus of  claim 1 , wherein the output device is comprised of a display device with LCD display device, for example, a digital TV.  
   
   
       7 . The apparatus of  claim 1 , wherein in the image decompression device reconstructs the compressed image data with majority of pixels recovered to be original image formats;  
   
   
       8 . A method of compressing the plurality of image with majority pixels having no difference comparing to the original pixels, comprising 
 searching for the best matching block for each block pixels from at least one nearest image to the targeted image;    coding the value of displacement of the best matching block of at least one nearest image and the targeted block pixels;    a bit rate control procedure which counts the data of compressed image and determines the compression ratio to be assigned to each image of the video sequence; and    coding the difference between the best matching blocks of at least one nearest image and the targeted block pixels.    
   
   
       9 . The method of  claim 8 , wherein the best matching algorithm takes the block of a location with minimum value of pixel differential sum within a predetermined searching area as the best matching block.  
   
   
       10 . The apparatus of  claim 8 , wherein in coding the difference of the best matching block of at least one nearest image and the targeted block pixels, most pixels have no difference compared to the original pixels;  
   
   
       11 . The apparatus of  claim 8 , wherein in coding the difference of the best matching block of at least one nearest image and the targeted block pixels, a certain amount of pixels have some degree of data loss compared to the original pixels with bit rate controlled by another device;  
   
   
       12 . The apparatus of  claim 8 , wherein in coding the displacement of the best matching block of at least one nearest image and the targeted block pixels, the value of X-axis stands for pixel number of movement in X-direction and the value of Y-axis stands for pixel number of movement in Y-direction;  
   
   
       13 . A method of recovering at least one compressed images, comprising reconstructing the compressed image into the original raw image format with majority pixels having no difference compared to the original pixels; 
 compressing the raw image data to another image compression format; and    outputting the compressed image data stream into another display or storage device.    
   
   
       14 . The apparatus of  claim 13 , wherein in reconstructing the compressed the image pixels, an Red,Green,Blue format is a targeted raw image data.  
   
   
       15 . The apparatus of  claim 13 , wherein in reconstructing the compressed the image pixels, an Y/U/V or Y/Cb/Cr format is a targeted raw image data.  
   
   
       16 . The apparatus of  claim 13 , wherein in compressing the reconstructed image pixels, a certain amount of pixels have difference compare to the original pixels.